During winter, PM 2.5_emis and PM 2.5 showed an increasing trend in 15.6% and 67.8% of the area while decreasing trends fell from 23.2 to 1.9%.
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Machine learning-based quantification and separation of emissions and meteorological effects on PM<sub>2.5</sub> in Greater Bangkok.
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The sentences
Removal of the effect of meteorology on PM 2.5 showed an increasing trend over 36% of the total area, a decreasing trend over 9.8%, and no trend over 54.1% of the total area.